The surreal cartoon usually follows the story of Peter Griffin and his family, including Stewie, in the fictional town of Quahog, Rhode Island.

But in the cartoon image released today, the Griffin family have been replaced by members of the royal family who attended Wednesday's service at St James' Palace, with the notable exception of Prince George - who has been replaced by Stewie.

His sidekick - the heavy-drinking talking dog Brian - also makes an appearance in the picture, taking an interest in the corgis with a pint in one paw.

Stewie's appearance in the christening picture is the latest step in his quest for world domination which has seen him invent weapons of mass destruction and try to murder his own mother.

The DVD of the 12th series features a story called Chap Of The Manor in which Peter Griffin's British alter-ego, Neville, discovers he is related to the Queen.

It sees the family swap their couch for a sofa, tune in to Wheel Of Politeness on the TV and start drinking in a pub rather than their usual bar, The Drunken Clam.

Family Guy Season 12 is released on DVD on November 4 from Twentieth Century Fox Home Entertainment and features the very British segment ‘Chap of the Manor’.